A mammalian extinction triggered by the rarefaction of CO2

This abstract is very important. A mammalian extinction was ALREADY driven by CO2 rarefaction.

“The decline of atmospheric CO2 over the last 65 million years (Ma) resulted in the ‘CO2-starvation’ of terrestrial ecosystems and led to the widespread distribution of C4 plants, which are less sensitive to CO2 levels than are C3 plants. Global expansion of C4 biomass is recorded in the diets of mammals from Asia, Africa, North America, and South America during the interval from about 8 to 5 Ma. This was accompanied by the most significant Cenozoic faunal turnover on each of these continents, ecological changes at this time were an important factor in mammalian extinction”. https://pmc.ncbi.nlm.nih.gov/articles/PMC1692178/

Indeed C3 plants are among the most calorie rich and include for instance soybean !

Don’t believe those who attempt to claim that “CO2 heats up the climate and heated up plants can take in less CO2, hence carbon starvation”. The truth is that carbon starvation happens because of LESS CO2, not because of too much ! (Isn’t this obvious ?) Walking on hands, heads down, is the specialty of the global warming ultras who believe CO2 is the equivalent of Satan.

In fact chilling reduces warm climate plants’ photosynthesis.

Since photosynthesis is endothermic (absorbs heat together with CO2), this means that there is a natural balance provided by photosynthesis, which is the opposite of combustion. The hotter, to a certain degree (34%) the more photosynthesis happens.

So there is a natural balance. Albeit not perfect, but nature is able to compensate too much warming thanks to CO2 photosynthesis. On the opposite too much cooling by CO2 (through the endothermy of photosynthesis) is also compensated by less photosynthesis. The hypothesis that the late Miocene was a period of cooling in relation to low CO2 levels is actually challenged by facts and a Nature communication (below) attempts to find a getaround… Counterintuitive (not to say hypocritical) claims are more and more present in science and disruptivity is collapsing.